I believe that Michael Collins was explicitly not mentioned because it was believed he was gonna make it back regardless. I’m not 100% certain, but I believe the speech was prepared for the (somewhat likely) scenario that Armstrong and Aldrin could not lift off from the surface of the moon due to failure or not enough fuel to meet up with Collins in the lunar orbiter to return to Earth.
I believe that Michael Collins was explicitly not mentioned because it was believed he was gonna make it back regardless. I’m not 100% certain, but I believe the speech was prepared for the (somewhat likely) scenario that Armstrong and Aldrin could not lift off from the surface of the moon due to failure or not enough fuel to meet up with Collins in the lunar orbiter to return to Earth.
Or they would have adopted the speech or something.
I thought I would get away with guessing a random name but you really know stuff apparently